Flume.



P. T. SNYDER.

PLUME.

THE NORRIS PE7` ERS CO.. PHOTO-LITHG.. WASHINGTON. D. C

1,ioa,sio.

IINIIS STATES PATENT PARKE T. SNYDER, 0F CHICAGO, ILLINOIS, ASSIGNOR OFONE-HALF TO ROSS J'. BEATTY, OF CHICAGO, ILLINOIS.

FLUME.

T0 all whom it may concern Be it known that I, PARKE T. SNYDER, acitizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin Flumes, of which the following is a specification.

My invention relates to improvements in metallic flumes.

One of the objects of my invention is to provide a flume that canreadily and quickly be made or built up of a series of sheets of metal,each sheet constituting a section whose longitudinal sides practicallymeet, thereby providing a flume that is substantially a completecylinder, in so far as its functions as an open flume are concerned.

In a copending application for flumes, iiled by me March 31, 1918, andidentified by Serial No. 757,733, I have disclosed a similarstructuremade of a series of sheets of .metal interlapped at adjacentedges to form a joint and secured at the side marginal edges of the lap,at equal distances apart for each sheet, as when the sheets are laidflat, and subsequently bowed into trough like shape, whereby the lappedsurfaces are brought into very intimatecontact by thus, subjecting` theouter sheet to expansionstress and the inner sheet to compression stressas the result of the manner of their attachment and the subsequentbowing of the sheets.

My present invention utilizes the same general manner of attachment ofthe adjacent sheets to form the joint therebetween but employs a morespecific means of carrying the joining operation into e'ect.

It furthermore comprises novel and useful means for mutually holding themarginal, longitudinal edges of the structure in position, to provide aflume of more nearly cylindrical cross section.

In the accompanying drawings forming a. part hereof Figure 1 is a planview of a portion of the completed flume. Fig. 2 is a transversesection, taken on line 2-2 of Fig. 1. Fig. 3 is an enlarged, fragmentarysection, taken on line 3-3 of Fig. 1. Fig. 4C is a similar section of amodification.

In all the views the same reference characters are employed to indicatesimilar parts.

The fiume is made of a series of sheets of suitable metal. such as 5 and6, preferably tapered in width slightly, so that the adjacent ends, ofsheet 5, when properly formed,

specification after-ters raient.

Application filed August 11, 1913.

Patented .any r, 1era.

Serial No. 784,106. i

may enter into the formed end of sheet 6, in interlapped relation toform a joint.

In Fig. 3 the longitudinal marginal edges of the outer sheet are turnedback upon themselves to form a holding means for the adjacent innersheet. lVhen the sheets are thus formed at their marginal edges, sheet 6is telescoped within this portion of sheet 5, so that when the structureis bowed, or curved into substantially circular formation, as shown inFigs. 1 and 2, there is no relative circumferential shifting or movementof lthe sheets, and therefore the outer sheet 5 is subjected toconsiderable expansion strain and the inner sheet 6 is subjected toconsiderable compression strain, the result of which is that theircontacting surfaces at the joints are forcibly pressed together therebymaking a completely, watertight joint. This is substantially the methodof making the joints described and claimed in my former application, butthe means of utilizing these folded marginal edges for the purpose ofmutually holding the structure in trough like, or cylindrical form, wasnot contemplated in my former application.

Fig. S'shows the interlapped relation at the joint of the two sheetswherein a transversely disposed clip 7 having' its ends turned back uponthemselves, as at 8, is inserted between the lapped portions of theinner sheet 6, to hold the sheet in substantially cylindrical form. Thesubstantial equivalent of this means of mutually holding the edges ofthe structure together is shown in Fig. 4, wherein sheets 5 and 6, onone of the marginal edges, are bent back upon themselves and occupy thesame relation as the same sheets are shown to occupy on both sides, inFig. 8, but on the other side of the marginal edge. sheet 6 is bent backover the end 5 of sheet 5, as at 6', and the lappedportions of sheets 5and 6, on theone side, are inserted between the terminals 5 6 of theother side and the body of said other side, thereby mutually holding thelongitudinal edges of the structure together without the necessity ofemplovinga clip, such as indicated by 7. The folds of the longitudinalmarginal edges of the modified structure. shown in Fig. 4, will operateto produce the same compressing and expanding effects of ythe respectivesheets at the joints, as 'shown in Fig; 3.

When arrangement of joining the edges together, as shown in Fig. 4c, iscontinued be` tween the joints it forms a practically closed structure.

One of the advantages of a closed, or substantially closed, structure isto prevent limbs, leaves of trees, and other debris from falling. intothe fiume and it furthermore increases the capacity of the flume andprevents evaporation to some extent.

The folds of the longitudinal marginal.

edges yof the respective sheets may be madev by use of'proper apparatuson the ground upon which the fiume is to be erected so that the sheetsmay be shipped' from the factory in a perfectly Hat state, in whichcondition they will occupy minimum space. The structure thereafter maybe readily and quickly put together' upon the ground, without thenecessity of special tools, and it may be supported by any means usuallyemployed for the support of similar pipe structures. 4

After the sheets have been folded at their longitudinal, marginal edges,and one sheet telescoped within theother and the structure bowed intotrough or cylinder like shape itis practically impossible to pull thesheets apart as the compression and expansion strains are so great thatthe friction effected thereby practically holds the sheets againstdisplacement under any ordinary condition of use.

While the cleat 7 is shown to be relatively short it is evident that itmay extend substantially the full length of the sheets and therebysubstantially close the opening between the opposite longitudinal edgesof the sheet. 1

While I have herein shown a single embodiment of my invention forpurpose of clear disclosure it is evident that departure may be madefrom the specific showing within the scope of the appended claims.

Having described my invention, whatI claim is zy v l. A fiume comprisinga series of sheets interlapped at their ends, having( their longitudinaledges folded upon themselves and bowed into cylindrical form, andconnected, to mutually hold the structure in shape.

2. A flume comprising a series of sheets, each having its longitudinaledges folded back upon itself, the ends of adjacent sheets interlapped,one within the other, to provide joints therebetween, and bowed intocylindrical shape, and means for connecting the longitudinal edges tomutually hold the e structure in shape.

3. A flume comprising a seriesof sheets, each having its longitudinaledges folded back upon itself, the ends of adjacent sheets interlappedonewithin .the other to provide joints therebetween, and bowed intolcylindrical shape, and cleats engaging the folded edges to hold thestructure in shape.

In testimony whereof I hereunto set my hand in the presence of twowitnesses.

PARKE T. SNYDER.

In the presence of FORE BAIN, MARY F. ALLEN.

Copies of this patent may be obtained for iive cents each, by addressingthe Commissioner "of ratents,

Washington, D. G.

